Steps to Reproduce
I have a listbox (bound to a ListModelList with single selection). I added a tabindex="0" to the <listindex /> element.
Now I can "tab" with the keyboard into the listbox. Cool.
I do not see that happen. There is no visual clue that I entered the listbox.
But: As soon as I use the cursor-keys (up/down/left/right) the first / selected row gets highlighted (=selected).
Either the first entry of the listbox should be selected / highlighted or at least the listbox should get a focus border.
Funfact: If I use a grid there is a bright visual hint whenever the grid is entered via keyboard. But here the selected line(s) in the ListModelList are not highlighted. And: keyboard navigation does not happen with the arrow keys but with the tab key.
So if anybody could assist that would be greatly appreciated as obviously both variants fail for different reasons.